lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

drm/i915: add support for physical memory objects

Browse Source 
This is an initial patch to do support for objects which needs physical
contiguous main ram, cursors and overlay registers on older chipsets.

These objects are bound on cursor bin, like pinning, and we copy
the data to/from the backing store object into the real one on attach/detach.

notes:
possible over the top in attach/detach operations.
no overlay support yet.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2008-12-30 20:31:46 +10:00
parent e285f3cd2c
commit 71acb5eb8d
4 changed files with 233 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/gpu/drm/i915/intel_display.c
View File

@@ -1020,17 +1020,23 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
return -ENOMEM;
}
if (dev_priv->cursor_needs_physical) {
addr = dev->agp->base + obj_priv->gtt_offset;
} else {
/* we only need to pin inside GTT if cursor is non-phy */
if (!dev_priv->cursor_needs_physical) {
ret = i915_gem_object_pin(bo, PAGE_SIZE);
if (ret) {
DRM_ERROR("failed to pin cursor bo\n");
drm_gem_object_unreference(bo);
return ret;
}
addr = obj_priv->gtt_offset;
}
ret = i915_gem_object_pin(bo, PAGE_SIZE);
if (ret) {
DRM_ERROR("failed to pin cursor bo\n");
drm_gem_object_unreference(bo);
return ret;
} else {
ret = i915_gem_attach_phys_object(dev, bo, (pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1);
if (ret) {
DRM_ERROR("failed to attach phys object\n");
drm_gem_object_unreference(bo);
return ret;
}
addr = obj_priv->phys_obj->handle->busaddr;
}
temp = 0;
@@ -1043,7 +1049,11 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
I915_WRITE(base, addr);
if (intel_crtc->cursor_bo) {
i915_gem_object_unpin(intel_crtc->cursor_bo);
if (dev_priv->cursor_needs_physical) {
if (intel_crtc->cursor_bo != bo)
i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
} else
i915_gem_object_unpin(intel_crtc->cursor_bo);
drm_gem_object_unreference(intel_crtc->cursor_bo);
}